After a couple of days, i get my fc3_64 system up and running well, but now, no support for mp3 and music ?
After reading a lot, i found on rpm.livna.org :
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# Thursday, October 28: x86_64 packages support dropped

Since we don't have an x86_64 maintainer anymore and the rpm.livna.org team can't guarantee the stability of the currently available x86_64 packages, we have dropped support for the x86_64 architecture. Sorry
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Any ideas on how to integrate MP3 / divx / mpe / support in FC3 64 ?

Firstly, MP3 support has been removed from FC3 altogether...not just x86_64. Also the other major repos support x86_64 and of course you can always rpmrebuild any src.rpms you want.

What packages are you trying to add MP3 support to?

Divx support is easy "yum install xvidcore.x86_64" and any of the media players should support mpeg1/2 OOTB.

I was a Gentoo user until this past weekend when I took the 64 bit plunge. Since I had to re-install anyway, I decided to try out Fedora. So far it is really nice, I like the way the 32 bit compatibility is maintained (of course everything is easier since it is a binary based distro, unlike Gentoo) and the on-dvd package selection is pretty decent. I wished that the major repos had more software in general, I'm kind of use to typing emerge *anything* and pretty much being able to get it. But I've learned how to use rpmrebuild and have my system pretty much up and running 100%.

With rpmbuild I get the following error
gcc: /usr/lib64/libGL.so: No such file or directory
This is a link down to this file libGL.so.1.2, which is missing. Can't seem to find which package this belongs to. Any suggestions?

So the link is borked because the libGL.so.1.2 package isn't there. With using yum to update I noticed that some of the 32 bit libraries were missing. Forcing rpm update fixed the problem but not for the 64 bit library.

I used same plugin for fc3 and did work and some of my privious stuff that I used in fc2 does work in fc3. I am not using the 64 version so you may have a point there cybrjackle.

even using i386 in your case, it is still a better idea to grab the src.rpm and rebuilding it if your jumping packages from one release to another. Your packages/system have been compiled with a different gcc and it's better for your system to stick with a standard. IMO